diff --git a/pyproject.toml b/pyproject.toml
index 5999beb..1eca9d9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,7 +29,7 @@ dependencies = [
     "ga4gh.vrs ~=2.0.0a10",
     "biocommons.seqrepo",
     "gene-normalizer ==0.4.0",
-    "cool-seq-tool ~=0.7.1",
+    "cool-seq-tool ~=0.8.0",
 ]
 dynamic=["version"]